Felina Marvelous Side Smoothing T-Shirt Bra, Bras for Women, Plus Size with Side Bulge Reduction

I'm a back sleeper, looking for a comfortable sleep bra to keep the ladies from flopping to the sides at night. Would this bra work?

Im 72 size 52b looking for.a decent bra what do you have for me?

Do you have a 36 D?

Are these wide under arms